<?php

function smarty_function_mailto($params,&$smarty)
{
$extra = '';
if (empty($params['address'])) {
$smarty->trigger_error("mailto: missing 'address' parameter");
return;
}else {
$address = $params['address'];
}
$text = $address;
$search = array('%40','%2C');
$replace  = array('@',',');
$mail_parms = array();
foreach ($params as $var=>$value) {
switch ($var) {
case 'cc':
case 'bcc':
case 'followupto':
if (!empty($value))
$mail_parms[] = $var.'='.str_replace($search,$replace,rawurlencode($value));
break;
case 'subject':
case 'newsgroups':
$mail_parms[] = $var.'='.rawurlencode($value);
break;
case 'extra':
case 'text':
$$var = $value;
default:
}
}
$mail_parm_vals = '';
for ($i=0;$i<count($mail_parms);$i++) {
$mail_parm_vals .= (0==$i) ?'?': '&';
$mail_parm_vals .= $mail_parms[$i];
}
$address .= $mail_parm_vals;
$encode = (empty($params['encode'])) ?'none': $params['encode'];
if (!in_array($encode,array('javascript','javascript_charcode','hex','none')) ) {
$smarty->trigger_error("mailto: 'encode' parameter must be none, javascript or hex");
return;
}
if ($encode == 'javascript') {
$string = 'document.write(\'<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>\');';
$js_encode = '';
for ($x=0;$x <strlen($string);$x++) {
$js_encode .= '%'.bin2hex($string[$x]);
}
return '<script type="text/javascript">eval(unescape(\''.$js_encode.'\'))</script>';
}elseif ($encode == 'javascript_charcode') {
$string = '<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>';
for($x = 0,$y = strlen($string);$x <$y;$x++) {
$ord[] = ord($string[$x]);
}
$_ret = "<script type=\"text/javascript\" language=\"javascript\">\n";
$_ret .= "<!--\n";
$_ret .= "{document.write(String.fromCharCode(";
$_ret .= implode(',',$ord);
$_ret .= "))";
$_ret .= "}\n";
$_ret .= "//-->\n";
$_ret .= "</script>\n";
return $_ret;
}elseif ($encode == 'hex') {
preg_match('!^(.*)(\?.*)$!',$address,$match);
if(!empty($match[2])) {
$smarty->trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.");
return;
}
$address_encode = '';
for ($x=0;$x <strlen($address);$x++) {
if(preg_match('!\w!',$address[$x])) {
$address_encode .= '%'.bin2hex($address[$x]);
}else {
$address_encode .= $address[$x];
}
}
$text_encode = '';
for ($x=0;$x <strlen($text);$x++) {
$text_encode .= '&#x'.bin2hex($text[$x]).';';
}
$mailto = "&#109;&#97;&#105;&#108;&#116;&#111;&#58;";
return '<a href="'.$mailto.$address_encode.'" '.$extra.'>'.$text_encode.'</a>';
}else {
return '<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>';
}
}

?>